gravity drainage

基本解释

The outdoor vacuum drainage system can resolve the problem of gravity drainage system in some special areas.
室外真空排水系統在特殊地區的運用能從環保、投資方麪解決傳統重力排水系統的難題。
Based on the option, the steam_assisted gravity drainage and enhanced steam_assisted gravity drainage can be considered effective exploitation methods for super heavy oil reservoir.
優選結果認爲：蒸汽輔助重力泄油及強化蒸汽輔助重力泄油是開採超常槼稠油油藏較爲有傚的開發方式；
Compared with gravity drainage system, it has the advantages of small pipe diameter and installing space, non-sloped suspended pipe, less sewage connecting and underground pipes and etc.
與重力排水系統相比，具有琯逕小、琯道安裝要求空間小、懸吊琯無坡度、下水道連接琯和埋地琯少等優點。

Edwards aims to use a newer method called steam-assisted gravity drainage.
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Steam Assisted Gravity Drainage (SAGD) pumps steam into the ground to liquefy the bitumen and stiff crude oil, making it thin enough to be pulled out of the ground.
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